Table 2 Association between study factors and DFD: unadjusted and adjusted odds ratios

  45–54 years

  55–64 years

(1.10–1.79)

(0.94–1.65)

  65–74 years

(1.59–2.54)

(1.22–2.18)

  75+ years

(3.14–4.96)

(2.10–3.85)

  Male

  Female

(0.73–0.93)

(0.58–0.81)

  Single

  Married/defacto

(0.48–0.74)

(0.48–0.82)

  Widowed

(0.87–1.43)

(0.51–0.94)

  Divorced/separated

(0.64–1.09)

(0.60–1.14)

  Major cities

  Inner regional

(0.87–1.12)

(0.79–1.09)

  Outer regional

(0.96–1.31)

(0.83–1.27)

  Remote

(1.27–2.50)

(1.18–2.81)

  Very remote

(0.33–3.05)

(0.28–3.99)

  English speaking countries

  Europe

(0.86–1.15)

(0.66–1.00)

  Middle East

(0.12–0.60)

(0.08–0.51)

  Asia

(0.16–0.42)

(0.16–0.58)

  Others

(0.30–0.77)

(0.28–0.86)

  quantile 1 (least disadvantaged)

  quantile 2

(0.90–1.29)

(0.77–1.18)

  quantile 3

(0.85–1.21)

(0.85–1.32)

  quantile 4

(0.86–1.24)

(1.04–1.63)

  quantile 5 (most disadvantaged)

(0.90–1.30)

(1.16–1.89)

  <  AUD 20,000

  AUD 20,000 - <  AUD 50,000

(0.58–0.75)

(0.70–0.98)

  AUD 50,000 or more

(0.30–0.42)

(0.46–0.76)

  No

  Yes

(1.22–1.55)

(1.13–1.51)

   < 150 min

  150–300 min

(0.44–0.63)

(0.51–0.78)

   > 300 min

(0.45–0.57)

(0.50–0.68)

  Type-1

  Type-2

(0.47–0.92)

(0.43–0.88)

   < 5 years

  5 to < 10 years

(1.21–1.81)

(1.10–1.67)

  10 to < 15 years

(1.36–2.05)

(1.15–1.74)

  15 years or more

(2.36–3.43)

(1.66–2.45)

   < 18.5

  18.5 to less than 25

(0.30–0.89)

(0.20–0.79)

  25 to less than 30

(0.27–0.78)

(0.21–0.79)

  30 or more

(0.31–0.92)

(0.26–1.00)

  No

  Yes

(1.84–2.37)

(1.40–1.89)

  No

  Yes

(1.60–2.30)

(1.09–1.73)

  No

  Yes

(1.05–1.46)

(1.02–1.56)

  None/low/moderate

  High/very high

(1.05–1.54)

(1.03–1.65)